These slides had a date on the slide mount, 1979 08, for the Marsh building construction at the Hamilton Centre Observatory. Not sure when actually taken or when developed. Abbreviations: CG - written on the slides, likely Clive Gibbons.

These slides had a date on the slide mount, 1979 08, for the Marsh building construction at the Hamilton Centre Observatory. Not sure when actually taken or when developed. Abbreviations: CG - written on the slides, likely Clive Gibbons.

These slides had a date on the slide mount, 1979 08, for the Marsh building construction at the Hamilton Centre Observatory. Not sure when actually taken or when developed. Abbreviations: CG - written on the slides, likely Clive Gibbons.

These slides had a date on the slide mount, 1979 08, for the Marsh building construction at the Hamilton Centre Observatory. Not sure when actually taken or when developed. Abbreviations: BS - written on the slide, likely the photographer, Barry Sherman.

These slides had a date on the slide mount, 1979 08, for the Marsh building construction at the Hamilton Centre Observatory. Not sure when actually taken or when developed. Abbreviations: BS - written on the slide, likely the photographer, Barry Sherman.

These slides had a date on the slide mount, 1979 08, for the Marsh building construction at the Hamilton Centre Observatory. Not sure when actually taken or when developed. Abbreviations: BH - written on the slide, not sure who BH is.

These slides had a date on the slide mount, 1979 08, for the Marsh building construction at the Hamilton Centre Observatory. Not sure when actually taken or when developed. Abbreviations: BH - written on the slide, not sure who BH is.

These slides had a date on the slide mount, 1979 08, for the Marsh building construction at the Hamilton Centre Observatory. Not sure when actually taken or when developed. Abbreviations: BH - written on the slide, not sure who BH is.

These slides had a date on the slide mount, 1979 08, for the Marsh building construction at the Hamilton Centre Observatory. Not sure when actually taken or when developed. Abbreviations: BH - written on the slide, not sure who BH is.